Hi,
If she has a flea, there's more than one.
I would give her a bath & use your Frontline too.
At 8 months, I bet she is ready to go into heat.
Because it's her first one, it will be light. But it will
last for three weeks. Have your dippers ready!
Princess got swollen the second week in her first heat.
Make sure you keep her away from Males!!!!
Good Luck!!!