Answer:
Mi abuela tuvo que deshilvanar las costuras que había hecho.
Step-by-step explanation:
Deshilvanar means removing the seams that have been made provisionally on a piece of cloth.
The correct way to conjugate this verb for the different people of the present simple in Spanish, is the following:
yo deshilvano
tú deshilvanas
Ud./él/ella deshilvana
nosotros, -as deshilvanamos
vosotros, -as deshilvanáis
Uds./ellos/ellas deshilvanan