1. High school players are rarely recruited just by playing high school volleyball. This can be due to the fact the high school season is also when the college volleyball season occurs and college volleyball coaches can't be in two places at one time. Sure, it can happen, but it is a rare occurrence for a high school player to get a scholarship.
2. If by travel teams, you are referencing winter/spring junior club volleyball, then yes, this is supremely better than lessons. The reason being that all college volleyball programs base their recruiting on seeing club volleyball teams practice and compete in the winter/spring. Individual lessons can augment club training, but playing with a club team is the best avenue to drastically improving volleyball skill sets, team play and getting seen by college volleyball coaches.
3. Volleyball is a tough sport because you can't practice alone, you must train with a group or team and there are many, many talented high school players with the same college scholarship goals as your daughter. The best advice I can give you is to do an internet search for a junior club volleyball team (you can do this by typing "USA Volleyball Region in Michigan, to get the regional usa volleyball page. On this page, you can search for junior girls club volleyball teams in your area and go to a tryout. These are select teams that you must try out for, be invited and then pay monthly dues (which can be expensive when combined with travel costs).
4. Within reason, she must constantly be playing volleyball in some capacity. It is not a sport you can pick up for three months, lay down for 9 months and then expect to make significant gains in ability to merit a college scholarship. Also, she must stay in good physical condition - Volleyball is very demanding on the body, and if a player is out of shape and tries to go full out, it often leads to some type of injury.
5. The recruiting process can be quite overwhelming if you are trying to play catch up, so you might wish to consider utilyzing a recruiting service to assist you. In the past, I was not a big supporter of recruiting services, but as of late, many of these services have greatly improved how they are presenting information and videos to college coaches. I will say that I have no idea how much they charge or the amount of time you need to allocate to interaction with them. If you are technologically sound and have the time/equipment/motivation, you can accomplish everything a recruiting service will charge you to do, but many parents would rather pay the fee of a service and allocate these efforts elsewhere.
6. The best advice I can give, is for your daughter to become the absolute best volleyball player possible. College volleyball coaches will find talented players, this is what we do. Do not put the cart ahead of the horse with focusing on recruiting - No matter how much marketing you do, no matter how many recruiting services you contract, no matter how many video tapes you make, if a player cannot play at the anticipated level of college volleyball, then she will not be recruited with a scholarship opportunity.
7. Please be aware that there are numerous levels/catagories of college volleyball - NCAA Division I, NCAA Division II, NCAA Division III, NAIA and Junior College. I have written in previous posts about the definitions of each catagory.