"Once we have her confident, we might move her to another foster home, that is better suited to taking her to parks and public places and getting her used to being around dogs and other children."
Through this process Ms Porteous says Charity will be able to be matched with the right adoptee.
The SPCA is still searching for the person responsible for throwing Charity off the bridge, and Ms Porteous urged people to help the investigation.
"If anyone still has information we would like that to be bought to our attention as the reward is still in place," Ms Porteous said.
App users click here to watch the video.
Charity was thrown from a van resembling a Toyota Estima just after 11pm on Wednesday, June 17.
If you find a lost pet:
If a pet has been found there are simple steps to be taken, as outlined by the SPCA.
Check with neighbours to make sure the dog does not belong to them
If you have found a puppy under four months of age ring the SPCA and organise to bring the puppy in
You can usually tell the age by looking at their teeth, they will have small sharp milk teeth if under 4 months of age
Any healthy stray dogs over four months of age will be picked up by your local council. Tauranga City Council 07 577 7000 or Western Bay District Council 07 571 8008