▁to ▁adopt ▁a ▁child , ▁Li am ▁Gall ag her ▁( John ny ▁Ben nett ) ▁convinced ▁them ▁to ▁try ▁to ▁be ▁parents ▁to ▁Sh ane ' s ▁nie ce ▁K atie . ▁This ▁plan ▁was ▁dashed ▁when ▁K atie ' s ▁father ▁Lip ▁decided ▁to ▁take ▁a ▁more ▁active ▁role ▁in ▁her ▁life . ▁Kelly ▁and ▁Sh ane ▁decided ▁to ▁give ▁up ▁on ▁their ▁plans ▁and ▁just ▁be ▁honor ary ▁parent al ▁figures ▁for ▁Li am , ▁whom ▁she ▁has ▁grown ▁quite ▁fond ▁of . ▁ ▁Kelly ▁was ▁revealed ▁in ▁the ▁th ir teenth ▁episode ▁of ▁series ▁ 7 ▁to ▁have ▁a ▁fifteen - year - old ▁half - s ister ▁named ▁Tony a , ▁whose ▁care ▁she ▁was ▁briefly ▁responsible ▁for . ▁Kelly ▁and ▁Tony a ▁were ▁both ▁father ed ▁by ▁a ▁man ▁named ▁H omer . ▁It ▁was ▁imp lied ▁that ▁he ▁ab used ▁them ▁both ▁sex ually . ▁Tony a ▁had ▁a ▁baby - boy ▁named ▁En rico , ▁who ▁was ▁in ▁fost er - care . ▁M icky , ▁who ▁pret ended ▁to ▁be ▁Sh ane ▁during ▁a ▁visit ▁from ▁a ▁social ▁worker ▁during ▁his ▁brother ' s ▁absence , ▁found ▁out ▁from ▁Tony a ▁that ▁En rico ▁was ▁actually ▁born ▁out ▁of ▁inc est ▁with ▁her ▁father , ▁who ▁ra ped ▁her . ▁She ▁begg ed ▁him ▁not ▁to ▁tell ▁Kelly . ▁After ▁finding ▁out ▁that ▁H omer ▁ab used ▁them ▁both , ▁M icky ▁inject ed ▁tran qu il izer ▁into ▁H omer ' s ▁blood