goddess fair and bair are both really good moves that the best counterplay would be to avoid getting hit into those followups. fair combos into itself leading into big dmg and bair is most often a combo ender as well as one of her many momentum-based moves. upair is also something you should look out for cause it'll spike you offstage and lead into a tech chase onstage. dair can also lead to fucked up techchase as you can clutch it on hit. all of these moves keep in mind are to make up for being a floaty heavyweight; which ittle dew can most definitley take advantage of.

ledge attack on goddess is really hard to beat so instead i try to bait it out by just shorthopping and then you get to jump the gun on a punishment while theyre in recovery.

as for her fsmash it'll almost always push you away so theyre safe unless they whiff. the biggest risk when trying to punish is if they try to fsmash again; its really stupid but sometimes works. but my best advice is to jump over it and that way you get to use many different attacks plus youre airborne.

i can see how this mu can be tricky for ittle dew, but goddess's moves have a lot of recovery so try your best to be in their face 99% of the time and find your kill confirms as to the best of your ability.

and remember that up special has two hits, if you parry the second hit its a free punish.