Lucky u stated your age,if not i wouldn’t have bothered to give
u advise.Its called puppy love,if she avoids u,let it be.She
probaly ain’t tactful enough to reject ya and soon you will forget
about her..Unless she stops avoiding you,you have no chance..To
me,the mum excuse is pretty cheap,how would the mum know which
contact is a guy unless she labels the group as boys and girl which
is quite unlikely,parents are always an excuse in a
relationship..