Pram for newborn (Penwortham Lane PR1)

My sister has a 3 week old baby and just been told the pram that was ordered ages ago is now delayed and won't be delivered until September. Please if anyone has something she can use where the baby can lay flat, we would be eternally grateful. At the moment she can't get out at all and just wants to be able to go for a little walk locally or to the shop. Thanks in advance!