Hi everyone, hope someone can give me a bit of advice

... poor little Mollie is teething and has lost two bottom teeth which didn't give her too much trouble but now her two front teeth are begining to grow
behind her baby teeth and her gum has swollen and looks very
red and sore.
Is there something I can rub on her gum to ease the pain? as I wouldn't like to give her any medicine like I would normally do if my springers were sick or in pain!
Also will I need my vet to eventually remove the baby teeth as the new one's are behind them and may not fall out by themselves then?
Any help will be very much appreciated ....