Acoustic guitar lessons

This year, my daughter was allowed to choose an instrument to play at school. Although I have played piano a little in the past, I was hoping she would choose acoustic guitar lessons, because guitars are relatively inexpensive and very portable (unlike pianos...). However, she decided to follow in my 'footsteps' and chose piano/keyboard instead.
The 'upside' of choosing piano is that I can help her quite a bit in the early stages, but I have not quite given up on the idea that she may eventually want to also learn guitar. Probably mainly because I gave my guitar away to my niece some years ago, and would like an excuse to buy another...